...of an interesting theory that the Cambrian Explosion was touched off by the...much later than trilobites. So trilobites eyes touched off the explosion in ...of large animal predation, when the trilobites never developed the necessary armament to... for small animal predation. Could eyes be useful for grazers? Maybe ... diversification? What would eyesight in trilobites have made such a difference....

... is referred to as the "Cambrian Explosion" in geological literature. Most of... and advanced structures, such as eyes, gills, and circulatory systems, exactly ..., the double-lensed, combed eye structure of trilobites is a wonder ... transitional links while describing the Cambrian Age, makes the following comment:...Molecular Comparisons Deepen Evolution's Cambrian Impasse Another fact that puts ...